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Letters .Patent No. 82,322, dated September 22, 1868.

IMPROVEMENT IN HEATINGvAPPBTUS.

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KNOW ALL MEN BY THESE PRESENTS:

That I, J. RIENzI JENNnss, of the city of Norwich, county of N ewLondon, and State of Connecticut, have invented certain-new and useful Improvements in Heating-Apparatus, especially designed for carving or warmingtables in hotels and restaurants, whereby such articles as have ,been cookedI in the kitchen may, when desired, in the carving or serving-room, be .preserved in the same condition as when cooked for many-hours and I do hereby declare the following to be a suciently clear and exact description of the same, reference being had to the accompanying drawings, that any one skilled in such matters may make and use the same.

Figure 1 is a perspective viewfof my apparatus, having one of the covers raised to show the interior of l the receiving-dishes, Sic., &c.

Figure 2 is a sectional view through the st eam-pipes Pand P, or through two of -the dishes, so that the Aheating-armoe between said dishes may be readily seen.

Like letters refer to like parts in bcth views or all the drawings. A A is abox, of either cast or wrought iron, of any desirable sise and shape, only that it must be capable of holding two. or more dishes or receivers B B. I

Said box. A A is composed of two shells, an outer and an inner, the inner one being formed-into chambers W C C, iig. 2, by double partitions joined at their upper edges, as seen at f f, iig-2, or, tobe more enact, by having the bottom of said shell 'raised up so as to form a partition between the dishes B B.

This raising of the bottom to form a double partition, will of course make a space, D, between the dishes B B, and will serve as a double jacket to each and both of them at the same time, and this constitutes a prominent feature of my invention,'by forming steam-chambers between each and all of the dishes.

The inner shell is formed with ilanges exactly corresponding to the 'outer one, and at those points are joined together either by rivets or screws tat, in such a manner as that the spaces between the two shells shall be steam-tight, and the box or chambered portion of the inner shell is made suiiicieutly less than th'e inside of theouter one, that when. joined at their anges, steam, on being admitted at one of the tubes P or P', may pass freely all through and around the spaces between the twoshells, and thespaces D between the dishes BB, and,

when desired, may pass olf'with the condensed water at the opposite pipe.' I have found it most convenient to form the shells` of cast-iron, as II could thereby most readily form the chambers of the inner shell to receive the dishes B B, and therebymostv conveniently leaves. space,-D, for steam between the dishes.

The dishes, as shown 'at B B, are formed of sheet metal, and are made lessj'at the-bottom, and not so deep as the chambers C C, thereby giving a space around iive complete sides of the dishes,v4 or up to their flanges by which they are suspended.

Covers o'o may be hinged on eachside to enclose said dishes, and a safety-va1ve as at s, figs. 1 and2, ccnsisting simply of a cap held upon the upper end of a tube, connecting withthesteam-space by a spring or weight, will complete the apparatus.

Food, or 'other article desired to be kept warm, is placed in the dishes B B, and steam is admitted through a pipe, as at' P, thereby communicating heat thoroughly and completely when the covers are closed, and each dish, andall of them, whether two or more; are kept equally and thoroughly heated.

To prevent the heat of the chambers in the inner shell from scorching or drying the contents of the dishes, I keep water in the bottom of said chambers, and the vapor thereof, rising along the sides of the dishes, entirely up to their flanges, or throughout the entire space between the dishes and chambers, furnishes a most excellent heating-medium.

I wish here to remark that having had many years' experience as proprietor of varioushot'els, I have often found the necessity of some such apparatus, and I have tried the various forms of lchaiing-tables in which the dishes are partly immersed in water heated by steam and other means, and I havealso Itried repeatedly many' 'well-known devices, in which large dishes or trays, with divisions in them, are partly su'spendcd'mstearn-jackets, similar to what my own wouldbe without the divisions C C, but after now more than one'year's daily trial, I iind thatthe steam-spaces between the several dishes are ofthe greatest'advantage in .keeping the contents o f each dish and all of them nt a uniform temperature, und by suspending them by flanges nt their upper edges, their entire contents are heated, whereas in all other devices of which I have any knowledge, this is only partially or very imperfectly accomplished.

What I claim therefore, and desire to secure by Letters Patent, is- 1. The stcam-spnce or spaces D, between the several chambersand dishes B B, substantially as described,

and for the purposes set forth.

2. The vessel or table A, chambers C, and space D, with induction and eduction-pipes, pans B, :ind covers O, when combined and arranged substantially as described, and for the purposes set forth.

J. RIENZI JENNESS.

Witnesses DANL YOUNG, C. W. JENNINGS. 

